MR, If you could be so kind to give me some advice on upgrading my Late 2011 MBP 13". I would like to upgrade: 8GB RAM > 16GB. 750 HD > 250 SSD I need advice on installing and equipment specs. My budget is flexible and I am willing to spend more if there is a noticeable increase in performance. I am currently considering: RAM: Corsair Apple Certified 16GB (2x8GB) DDR3 1333 MHz (PC3 10666) Laptop Memory (CMSA16GX3M2A1333C9) SSD: Samsung 850 Pro 256GB 2.5-Inch SATA III Internal SSD (MZ-7KE256BW) or Samsung 840 EVO 250GB 2.5-Inch SATA III Internal SSD (MZ-7TE250BW) Are these products suitable and reliable? Is there a big difference between the 850 pro and the 840 EVO? Thanks guys.